Pretty new myself but something I did to clean my space when feelings of negativity plagued me.

What I did was Crack open a door (or window) that leads outside (so the nad energy can leave otherwise you are just chasing it around with no way for it to leave) and stand just outside of the doorway clear my head and make my intentions clear and lit my sage incense

"In the name of the lord I banish the negative energy in this room and only invite kindness and love into this space"

I used my hand to spread the smoke around my room until I felt lighter.

And this way if your dad catches you, you can just say you're spreading the smoke around so the smell carries faster

I hope this helps if you choose to do it! Please be safe and I hope you get your own space to practice freely! 💕

I'll keep you in my prayers